The Nucleus

In chemistry, how many types of subatomic particles are considered to form everything?

• two
• three
• 92
• billions

Tags

NGSS.HS-PS1-8

What is defined as "a well-tested set of ideas that explains many disparate observations"?

• a theory
• a guess
• a law
• a hypothesis

Which scientist mathematically proved the existence of atoms and molecules in 1905?

• Robert Brown
• Albert Einstein
• Antoine Lavoisier
• Ernest Rutherford

Named after a botanist, the random motion of particles suspended in a fluid is called _____

• Mendelian motion
• Einsteinian motion
• Brownian motion
• Rutherford motion

The word "atom" is from the _____

• Latin for "three parts"
• Greek for "indivisible"
• Gaelic for "uncuttable"
• French for "tiny"

The proton is _____

• heavy and neutral
• heavy and negatively charged
• heavy and positively charged
• light and negatively charged

Tags

NGSS.HS-PS1-8

The neutron is _____

• heavy and neutral
• heavy and negatively charged
• heavy and positively charged
• light and neutral

Tags

NGSS.MS-PS1-1

The electron is _____

• heavy and positively charged
• light and positively charged
• light and neutral
• light and negatively charged

The electron is about _____ times less massive than the proton or neutron.

• 18
• 180
• 1800
• 18 000

Protons and neutrons hang out in the nucleus, and are referred to as _____

• kernals
• bosons
• nucleotides
• nucleons

Tags

NGSS.HS-PS1-8